name='Steve Crook']Our condolences to you Paul.
As for the IMDb they only add information when they're told things. They do check the national newspapers in various countries, but that's only to look for any internationally famous people that have died.
If you can refer to an obituary in any newspaper, even a fairly local one, then that can be used with a submission. Otherwise they'll need to see a scan of a death certificate. They did used to get some people submitting dates of death when the people were still alive so now they're more cautious
Steve